Crown Rump Length Calculator

Crown Rump Length Calculator calculator can be used to estimate the gestational age of a fetus based on the Crown Rump Length (CRL).

Input Parameters

Calculation Results

Estimated Gestational Age

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Estimated gestational age is calculated using the Crown Rump Length (CRL) based on standard fetal development charts.

Calculation Formula

Gestational Age (weeks) ≈ 0.42 * CRL (mm) + 2

Where:
CRL (mm): Crown Rump Length in millimeters
Gestational Age: Estimated age of the fetus in weeks

Crown Rump Length Calculator Calculator Usage Guide

Learn how to use the Crown Rump Length Calculator calculator and its working principles

How to Use the Calculator

  1. Enter the Crown Rump Length (CRL) of the fetus in millimeters. Ensure the measurement is accurate and obtained from an ultrasound.
  2. Click the "Calculate" button to compute the estimated gestational age.
  3. The result will be displayed in weeks. This estimation is based on standard fetal development charts.

Working Principle

The Crown Rump Length (CRL) is a measurement used in ultrasound to estimate the gestational age of a fetus, particularly in the first trimester. The formula used in this calculator is derived from standard medical guidelines and provides a reliable estimation based on the CRL.

Limitations

While the Crown Rump Length Calculator is a useful tool, it should be used in conjunction with other clinical assessments. The accuracy of the estimation can be influenced by factors such as the precision of the ultrasound measurement and the individual variability in fetal development.